Disconnecting/connecting the engine wiring harness - AR01.00-P-2410PV

ENGINE 112.912 in MODELS 203.061 /261, 209.361 /461 with TRANSMISSIONS 716.6, 722.6

ENGINE 112.946 in MODELS 203.064 /264 with TRANSMISSION 722.6

ENGINE 112.955 in MODELS 209.365 /465 with TRANSMISSION 722.618

ENGINE 112.961 in MODELS 203.065 /265 with TRANSMISSION 722.6

ENGINE 113.968 in MODELS 209.375 /475 with TRANSMISSION 722.633

ENGINE 113.987 in MODELS 209.376 /476 with TRANSMISSION 722.636

ENGINE 112.916 in MODELS 203.081 /281

ENGINE 112.953 in MODELS 203.084 /284

ENGINE 113.988 in MODELS 203.076 /276 with TRANSMISSION 722.636

Fig 1: Identifying Engine Wiring Harness Disconnect/Connect Components - Engine 112.912/916/946/953/961, 113.988 (1 Of 5)

Illustrated on model 203

Fig 2: Identifying Engine Wiring Harness Disconnect/Connect Components - Engine 112.912/916/946/953/961, 113.988 (2 Of 5)

Illustrated on model 203

Fig 3: Identifying Engine Wiring Harness Disconnect/Connect Components - Engine 112.912/916/946/953/961, 113.988 (3 Of 5)

Illustrated on model 203

Fig 4: Identifying Engine Wiring Harness Disconnect/Connect Components - Engine 112.912/916/946/953/961, 113.988 (4 Of 5)

Shown on model 203 with 4MATIC

Fig 5: Identifying Engine Wiring Harness Disconnect/Connect Components - Engine 112.912/916/946/953/961, 113.988 (5 Of 5)

	Removing/installing
	Risk of explosion caused by oxyhydrogen gas. Risk of poisoning and caustic burns caused by swallowing battery acid. Risk of injury caused by burns to skin and eyes from battery acid or when handling damaged leadacid batteries	No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers.	AS54.10-Z-0001-01A
	Notes on battery	All models	AH54.10-P-0001-01A
1	Disconnect battery ground cable	Model 209: Do not connect quiescent current retention unit, otherwise damage could occur in the control unit.
		Model 203	AR54.10-P-0003P
		Model 209	AR54.10-P-0003Q
2	Detach cover via battery positive terminal (1) at battery.
3	Disconnect battery positive terminal (1) at the battery
4	Open cover on cable connector (2)
5	Disconnect positive cable (3) at cable connector (2)
6	Detach top rubber seal (4) from right splash wall
7	Release top left and right plastic guide (5) and pull out with positive lead (3)	Put plastic guide (5) and positive lead (3) to the side.
8	Remove cover via cover of fuse, relay box (6)
9	Remove cover of fuse and relay box (6).	Installation: Check rubber seal in cover (4) and replace if necessary. The fuse, relay box (6) must sit at the rear in groove.
10	Disconnect connectors of the ME-SFI [ME] control unit (N3/10) in the fuse and relay box
11	Disconnect connectors on the driver-side SAM control unit with fuse and relay module (N10/1) in the fuse and relay box
12	Separate connector of separation point module housing/engine (6a) in fuse and relay box.
13	Detach top rubber seal (7) from left splash wall
14	Pull wiring loom (9) out of fuse and relay box	Installation: Ensure that the rubber seal (10) is seated correctly.
15	Pull out plastic guide (8) with wire harness (9)
16	Remove engine compartment paneling		AR61.20-P-1105P
17	Detach ground line at power steering pump
18	O2 Disconnect left 02 sensor connector, upstream of TWC (G3/3x1) O2a and right 02 sensor connector, upstream of TWC (G3/4x1).	Press the plug connectors out of the brackets.
19	Separate the left O2 sensor connector downstream of TWC (G3/5x1) O2 and the right sensor connector downstream of TWC (G3/6x1).	Press the plug connectors out of the brackets.
20.1	Take off shield (11) for connector on automated manual transmission, 18-pin (X22/17).	On vehicles with Transmission 722.6.
21.1	Take off connector of automated manual transmission, 18-pin (X22/17).	On vehicles with Transmission 722.6.
		installation: Check O-ring for connector of automated manual transmission, 18-pin (X22/17), replace if necessary.
22	Remove ground transmission (W49)	Engine 113.988 in models 203.076 /276, Engines 112.955, 113.968 /987 in model 209: ↓
		Bolt or nut for rear engine mount on transmission *BA22.10-P-1006-01L
		Engines 112.912 /916 /946/953/961 in model 203: ↓
		Bolt or nut for rear engine mount on transmission	*BA22.10-P-1006-01R
23.1	Separate connector of automated manual transmission, 2-pin (X22/18).	On vehicles with Transmission 716.6.
24	Install in reverse order
25	Perform basic programming	Model 203	AR00.19-P-0200P
		Model 209	AR00.19-P-0200Q
26	Read out fault memory and erase	When the work is complete stored faults must be worked on in the diagnostic trouble code memories and erased. The stored faults can be caused by removed cables, assembly operations, test operations as well as by a simulation.
	Connect up STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
		Diagnosis system STAR DIAGNOSIS, Compact Passenger Car	*WH58.30-Z-1048-13A
27	Carry out function check

ENGINE MOUNTS, ENGINE SUPPORTS

Number	Designation			Engine 113.968 in model 209	Engine 113.987 in model 209
BA22.10-P-1006-01L	Bolt or nut for rear engine mount on transmission	M8	Nm	-	-
BA22.10-P-1006-01L	Bolt or nut for rear engine mount on transmission	M10	Nm	50	50

ENGINE MOUNTS, ENGINE SUPPORTS

Number	Designation			Engine 113.988 in model 203.076/276	Engine 112.955 in model 209
BA22.10-P-1006-01L	Bolt or nut for rear engine mount on transmission	M8	Nm	-	-
BA22.10-P-1006-01L	Bolt or nut for rear engine mount on transmission	M10	Nm	50	40

ENGINE MOUNTS, ENGINE SUPPORTS

Number	Designation			Engines 112.912/946 in model 203	Engines 112.916/953 in model 203	Engine 112.901 in model 203
BA22.10-P-1006-01R	Bolt or nut for rear engine mount on transmission	M8	Nm	-	-	-
BA22.10-P-1006-01R	Bolt or nut for rear engine mount on transmission	M10	Nm	50	40	50

COMMERCIALLY AVAILABLE TOOLS

Number	Designation
WH58.30-Z-1048-13A	STAR DIAGNOSIS diagnosis system, Compact Passenger Car	6511 1801 00